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VxWorks 5.4 Programmer’s Guide 7.5 Using the MMU Programmatically ............................................................... 293 7.5.1 Virtual Memory Contexts ................................................................. 293 Global Virtual Memory ..................................................................... 293 Initialization ....................................................................................... 294 Page States .......................................................................................... 294 7.5.2 Private Virtual Memory .................................................................... 295 7.5.3 Noncacheable Memory ..................................................................... 302 7.5.4 Nonwritable Memory ....................................................................... 304 7.5.5 Troubleshooting ................................................................................. 306 7.5.6 Precautions ......................................................................................... 307 8 Configuration and Build .................................................................................................. 309 8.1 Introduction ...................................................................................................... 309 8.2 The Board Support Package (BSP) ................................................................. 310 The System Library ........................................................................... 311 Virtual Memory Mapping ................................................................ 312 The Serial Driver ................................................................................ 312 BSP Initialization Modules ............................................................... 312 BSP Documentation ........................................................................... 312 8.3 VxWorks Initialization Timeline .................................................................... 313 The VxWorks Entry Point: sysInit( )............................................... 313 The Initial Routine: usrInit( )........................................................... 314 Initializing the Kernel ....................................................................... 315 Initializing the Memory Pool ........................................................... 316 The Initial Task: usrRoot( )............................................................... 317 The System Clock Routine: usrClock( ).......................................... 322 Initialization Summary ..................................................................... 322 8.4 Building, Loading, and Unloading Application Modules ......................... 325 8.4.1 Using VxWorks Header Files ........................................................... 325 VxWorks Header File: vxWorks.h ................................................... 325 Other VxWorks Header Files ........................................................... 326 ANSI Header Files ............................................................................. 326 xvi
Contents The -I Compiler Flag ......................................................................... 326 VxWorks Nested Header Files ......................................................... 326 Internal Header Files ......................................................................... 327 VxWorks Private Header Files ......................................................... 328 8.4.2 Compiling Application Modules ..................................................... 329 The GNU Tools ................................................................................... 329 Cross-Development Commands ...................................................... 330 Defining the CPU Type ..................................................................... 330 Compiling C Modules ....................................................................... 332 Compiling C++ Modules .................................................................. 334 8.4.3 Static Linking (Optional) ................................................................... 334 8.4.4 Downloading an Application Module ............................................ 335 8.4.5 Module IDs and Group Numbers ................................................... 336 8.4.6 Unloading Modules ........................................................................... 336 8.5 Configuring VxWorks ...................................................................................... 337 8.5.1 The Environment Variables .............................................................. 337 8.5.2 The Configuration Header Files ...................................................... 338 The Global Configuration Header File: configAll.h ..................... 339 The BSP-specific Configuration Header File: config.h ................. 339 Selection of Optional Features ......................................................... 340 8.5.3 The Configuration Module: usrConfig.c ........................................ 343 8.6 Alternative VxWorks Configurations ............................................................ 344 8.6.1 Scaling Down VxWorks .................................................................... 344 Excluding Kernel Facilities ............................................................... 344 Excluding Network Facilities ........................................................... 345 Option Dependencies ........................................................................ 346 8.6.2 Executing VxWorks from ROM ....................................................... 346 8.6.3 Initialization Sequence for ROM-Based VxWorks ........................ 349 8.7 Building a VxWorks System Image ............................................................... 351 8.7.1 Available VxWorks Images ............................................................... 351 8.7.2 Rebuilding VxWorks with make ..................................................... 352 xvii
Page 1 and 2: VxWorks Programmer’s Guide ® 5.4
Page 3: 1 Overview ........................
Page 6 and 7: VxWorks 5.4 Programmer’s Guide 2
Page 8 and 9: VxWorks 5.4 Programmer’s Guide 2.
Page 10: VxWorks 5.4 Programmer’s Guide 3.
Page 13 and 14: Contents 4.4.2 Initializing the raw
Page 15: Contents 6.2.4 Shared-Memory Alloca
Page 19 and 20: Contents 9.2.6 Summary of Target an
Page 21 and 22: Contents Double-word Integers: long
Page 23 and 24: Contents F.2 Building Applications
Page 25 and 26: Contents H.4 Architecture Considera
Page 27 and 28: 1 Overview 1.1 Introduction This ma
Page 29 and 30: 1 Overview You can use the cross-de
Page 31 and 32: 1 Overview ■ ■ ■ ■ ■ Perf
Page 33 and 34: 1 Overview services. Using these in
Page 35 and 36: 1 Overview RT-11 Compatible File Sy
Page 37 and 38: 1 Overview Target-Resident Tools 1
Page 39 and 40: 1 Overview writer and a single read
Page 41 and 42: 1 Overview Board Support Packages (
Page 43 and 44: 1 Overview 1.6 Documentation Conven
Page 45 and 46: 2 Basic OS 2.1 Introduction Modern
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Page 49 and 50: 2 Basic OS Preemptive Priority Sche
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2 Basic OS Figure 2-5 Stack Variabl
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2 Basic OS Figure 2-7 Multiple Task
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2 Basic OS tPortmapd If you have in
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2 Basic OS sometimes be necessary w
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2 Basic OS the other semaphore-cont
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2 Basic OS * blocked on semaphore w
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2 Basic OS ■ ■ ■ ■ It can b
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2 Basic OS guarding the resource le
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2 Basic OS semaphore with an initia
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2 Basic OS Table 2-15 POSIX Semapho
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2 Basic OS printf ("unnameSem: sem_
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2 Basic OS To remove a semaphore, a
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2 Basic OS 2.4.4 Message Queues Mod
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2 Basic OS Urgent Messages The msgQ
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2 Basic OS queue is full, mq_send(
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2 Basic OS void sendTask (void) { m
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2 Basic OS mySigAction.sa_sigaction
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2 Basic OS /* Read in the messages
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2 Basic OS printf ("mq_receive with
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2 Basic OS intertask messages. In V
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2 Basic OS individually addressed p
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2 Basic OS Table 2-20 Basic Signal
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2 Basic OS 2.5 Interrupt Service Co
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2 Basic OS 2.5.3 Special Limitation
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2 Basic OS the boot ROMs re-display
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2 Basic OS Table 2-24 Watchdog Time
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2 Basic OS 2.8 POSIX Memory-Locking
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3 I/O System 3.1 Introduction The V
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3 I/O System The first refers to a
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3 I/O System Table 3-1 Basic I/O Ro
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3 I/O System Table 3-2 File Access
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3 I/O System The write( ) routine e
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3 I/O System Example 3-1 Applicatio
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3 I/O System 3.4.1 Using Stdio Note
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3 I/O System While sscanf( ) is imp
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3 I/O System (which can be seen on
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3 I/O System that reason, their ret
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3 I/O System /* clean up */ if (aio
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3 I/O System aiocb_write.aio_sigeve
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3 I/O System Tty Options The tty de
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3 I/O System possible to restart Vx
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3 I/O System Writing to Pipes from
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3 I/O System Mounting a Remote NFS
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3 I/O System Files on a network dev
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3 I/O System with rt11Fs using rt11
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3 I/O System the same BSP, then dif
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3 I/O System typedef struct /* SCSI
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3 I/O System /* configure Wincheste
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3 I/O System /* initialize a tapeFs
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3 I/O System 3.7.7 Sockets In VxWor
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3 I/O System VxWorks file systems,
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3 I/O System Drivers can optionally
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3 I/O System Figure 3-2 Example - D
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3 I/O System information. In partic
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3 I/O System Figure 3-5 Example: Ca
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3 I/O System Figure 3-6 Example: Ca
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3 I/O System can also occur elsewhe
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3 I/O System if (pMyDrvDev->myDrvDa
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3 I/O System else { cacheFlush (DAT
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3 I/O System the end of the written
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3 I/O System operations in the init
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3 I/O System Table 3-15 Fields in t
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3 I/O System pDev numBytes buffer f
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3 I/O System funcCode the requested
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3 I/O System dosFsModeChange( )) is
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3 I/O System routine is the opposit
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3 I/O System end-of-file. However,
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4 Local File Systems 4.1 Introducti
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4 Local File Systems Figure 4-1 MS-
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4 Local File Systems Figure 4-2 FAT
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4 Local File Systems Volume Label A
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4 Local File Systems The routine do
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4 Local File Systems limit its use,
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4 Local File Systems value (at leas
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4 Local File Systems You can also e
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4 Local File Systems The most commo
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4 Local File Systems 4.2.14 Reading
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4 Local File Systems /* set read-on
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4 Local File Systems data would be
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4 Local File Systems To explicitly
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4 Local File Systems It is also pos
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4 Local File Systems Table 4-5 I/O
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4 Local File Systems ! WARNING: The
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4 Local File Systems 4.3.4 Mounting
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4 Local File Systems Ready-change c
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4 Local File Systems 4.4.2 Initiali
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4 Local File Systems 4.4.6 Changing
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4 Local File Systems However, if th
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4 Local File Systems The tapeFsInit
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4 Local File Systems Mounting Volum
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4 Local File Systems Table 4-9 MTIO
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4 Local File Systems Each I/O reque
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4 Local File Systems ! WARNING: Whe
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5 C++ Development Basic Support and
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5 C++ Development routines in WindS
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5 C++ Development ! WARNING: In the
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5 C++ Development Calling Static Co
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5 C++ Development -frepo This appro
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5 C++ Development consult any stand
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5 C++ Development Run-Time Type Inf
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5 C++ Development modification hist
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5 C++ Development */ object_t* clas
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5 C++ Development catch (exception)
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5 C++ Development /****************
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5 C++ Development /* object_registr
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5 C++ Development ! CAUTION: In ord
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5 C++ Development /* Create a watch
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6 Shared-Memory Objects Optional Co
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6 Shared-Memory Objects 6.2.1 Name
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6 Shared-Memory Objects 6.2.2 Share
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6 Shared-Memory Objects Figure 6-1
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6 Shared-Memory Objects /**********
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6 Shared-Memory Objects } { if (msg
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6 Shared-Memory Objects memory syst
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6 Shared-Memory Objects Example 6-3
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6 Shared-Memory Objects /* get shar
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6 Shared-Memory Objects if ((smMemP
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6 Shared-Memory Objects 6.3 Interna
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6 Shared-Memory Objects 6.3.5 Cache
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6 Shared-Memory Objects Table 6-5 W
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6 Shared-Memory Objects Table 6-6 C
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6 Shared-Memory Objects ■ ■ ■
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7 Virtual Memory Interface Basic Su
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7 Virtual Memory Interface To make
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7 Virtual Memory Interface 7.5 Usin
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7 Virtual Memory Interface Change t
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7 Virtual Memory Interface Figure 7
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7 Virtual Memory Interface /* Selec
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7 Virtual Memory Interface typedef
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7 Virtual Memory Interface processo
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7 Virtual Memory Interface * This r
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7 Virtual Memory Interface 0x1fb800
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8 Configuration and Build 8.1 Intro
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8 Configuration and Build The Syste
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8 Configuration and Build devices.
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8 Configuration and Build NOTE: The
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8 Configuration and Build The Initi
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8 Configuration and Build Installat
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8 Configuration and Build As noted
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8 Configuration and Build Table 8-1
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8 Configuration and Build 8.4 Build
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8 Configuration and Build tty heade
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8 Configuration and Build ! CAUTION
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8 Configuration and Build To define
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8 Configuration and Build -DCPU=arc
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8 Configuration and Build ! WARNING
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8 Configuration and Build linker ld
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8 Configuration and Build The Globa
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8 Configuration and Build - INCLUDE
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8 Configuration and Build Aside fro
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8 Configuration and Build ROM image
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8 Configuration and Build 8.7 Build
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8 Configuration and Build Figure 8-
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8 Configuration and Build sake of c
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8 Configuration and Build by the su
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8 Configuration and Build compilati
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8 Configuration and Build CC_DEFINE
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8 Configuration and Build 8.8.2 Usi
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8 Configuration and Build can simpl
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8 Configuration and Build As before
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9 Target Shell 9.1 Introduction In
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9 Target Shell 9.2.2 Using the Targ
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9 Target Shell Note that an offendi
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9 Target Shell ■ ■ ■ ■ ■
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9 Target Shell by reading the targe
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9 Target Shell Table 9-3 Network Sh
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Appendices 381
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